Over 100 caves which extend inside the mountain range, but only five caves open to the public. Descend with lantern in hand exploring the many shrines, statues and Buddha images. It is not all walking, in places you have to crawl through small openings and then clamber into large caverns.
A reasonably easy trek, takes you through forests, local villages arriving at the cave monastery, be sure to pay the little extra for a local guide and don't forget to duck low in the cave, "mind your head".